//
// experimental/impl/deferred.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2022 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

#ifndef ASIO_EXPERIMENTAL_IMPL_DEFERRED_HPP
#define ASIO_EXPERIMENTAL_IMPL_DEFERRED_HPP

#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)

#include "asio/detail/push_options.hpp"

namespace asio {

#if !defined(GENERATING_DOCUMENTATION)

    template<typename R, typename... Args>
    class async_result<
            experimental::detail::deferred_signature_probe, R(Args...)> {
    public:
        typedef experimental::detail::deferred_signature_probe_result<void(Args...)>
                return_type;

        template<typename Initiation, typename... InitArgs>
        static return_type initiate(
                ASIO_MOVE_ARG(Initiation),
                experimental::detail::deferred_signature_probe,
                ASIO_MOVE_ARG(InitArgs)...) {
            return return_type{};
        }
    };

    template<typename Signature>
    class async_result<experimental::deferred_t, Signature> {
    public:
        template<typename Initiation, typename... InitArgs>
        static experimental::deferred_async_operation<
                Signature, Initiation, InitArgs...>
        initiate(ASIO_MOVE_ARG(Initiation) initiation,
                 experimental::deferred_t, ASIO_MOVE_ARG(InitArgs)...

        args)
        {
            return experimental::deferred_async_operation<
                    Signature, Initiation, InitArgs...>(
                    experimental::deferred_init_tag{},
                    ASIO_MOVE_CAST(Initiation)(initiation),
                    ASIO_MOVE_CAST(InitArgs)(args)...);
        }
    };

    template<typename Function, typename R, typename... Args>
    class async_result<
            experimental::deferred_function < Function>

    ,
    R(Args
    ...)> {
    public:

    template<typename Initiation, typename... InitArgs>
    static auto initiate(ASIO_MOVE_ARG(Initiation) initiation,
                         experimental::deferred_function <Function> token,
                         ASIO_MOVE_ARG(InitArgs)...

    init_args) {
    return
    experimental::deferred_sequence <
    experimental::deferred_async_operation<
            R(Args...), Initiation, InitArgs...>,
    Function>(experimental::deferred_init_tag{},
            experimental::deferred_async_operation<
            R(Args...), Initiation, InitArgs...>(
            experimental::deferred_init_tag{},
            ASIO_MOVE_CAST(Initiation)(initiation),
            ASIO_MOVE_CAST(InitArgs)(init_args)...),
            ASIO_MOVE_CAST(Function)
    (token.function_));
}
};

template<template<typename, typename> class Associator,
        typename Handler, typename Tail, typename DefaultCandidate>
struct associator<Associator,
        experimental::detail::deferred_sequence_handler < Handler, Tail>,
DefaultCandidate>
: Associator<Handler, DefaultCandidate>
{
static typename Associator<Handler, DefaultCandidate>::type get(
        const experimental::detail::deferred_sequence_handler <Handler, Tail> &h,
        const DefaultCandidate &c = DefaultCandidate())

ASIO_NOEXCEPT
{
return
Associator<Handler, DefaultCandidate>::get(h
.handler_, c);
}
};

#endif // !defined(GENERATING_DOCUMENTATION)

} // namespace asio

#include "asio/detail/pop_options.hpp"

#endif // ASIO_EXPERIMENTAL_IMPL_DEFERRED_HPP
